One hose not listed (due to the lightning rod holder in it's place) is this guy:



I believe it is Aeroquip type/brand. A quick search for aeroquip on EBay pulls up both hoses and end fittings.. many look pretty close to the screen used. Mark, do you know the proper sizes for these fittings?

I will definitely attempt to frankenstein parts together. As you've mentioned the real hoses are either rare or crazy expensive.